Controlled Exposure of Healthy Nonsmokers to Secondhand and Thirdhand Cigarette Smoke

Inclusion Criteria: * Healthy on the basis of medical history, blood pressure and test of C-reactive protein, lipids and blood sugar. * Non-smoker not exposed to second-hand smoke (SHS) as determined by saliva cotinine \< 10 ng/ml and tetrahydrocannabinol (THC) \< 50 ng/ml. * Flow mediated dilation of 4% or greater at screening visit. Exclusion Criteria: * Age 18 \< or \> 50 Physician diagnosis of asthma, heart disease, hypertension, thyroid disease, diabetes, renal or liver impairment or glaucoma. Unstable psychiatric condition (such as current major depression, history of schizophrenia or bipolar disorder) or current use of more than two psychiatric medications Systolic blood pressure \> 150 Diastolic blood pressure \> 100 Blood glucose \> 110 LDL \>130 Pregnancy or breastfeeding (by urine Human Chorionic Gonadotropin (hCG) and/or history) Alcohol or illicit drug dependence within the past 5 years BMI \> 35 and \< 18 Current illicit drug use (by history or urine test) More than 1 pack year smoking history Ever a daily marijuana smoker Smoked anything within the last 3 months Unable to hold allergy or other over-the-counter (OTC) medicines Occupational exposure to smoke, dusts and fumes Concurrent participation in another clinical trial Unable to communicate in English No social security number